217 DXCC 36 Zones. Shunt fed tower. No radials. West Coast city lot. I can
only imagine my totals if it really worked.
73 Steve WB6RSE
> On Sep 15, 2018, at 5:42 PM, John Harden, D.M.D. <jhdmd@bellsouth.net> wrote:
>
> A shunt fed tower requires radials period. It cannot work without them!
>
> 73,
>
> John, W4NU
>
> Sent from my iPhone
>
>> On Sep 15, 2018, at 1:55 PM, <daraymond@iowatelecom.net>
>> <daraymond@iowatelecom.net> wrote:
>>
>> It makes no difference how the tower is fed, a vertical antenna must have
>> radials of some kind to be effective. 73. . .Dave, W0FLS
>>
>> -----Original Message----- From: cfytech24x7
>> Sent: Saturday, September 15, 2018 11:29 AM
>> To: topband@contesting.com
>> Subject: Topband: Use shunt fed tower
>>
>> A shunt fed tower is a vertical antenna so it offers lowest take off angle.
>> Shunt feeding avoids need for radial field. Any horizontal wire antenna is
>> going to put most of your radiated energy out at high angles, unless you can
>> get it at least a half wavelength of height. A loop may be a quieter
>> antenna for RX but your existing inverted Vs are no doubt better for TX.
>> There is some art and experimentation involved in the matching but the
>> results will be worth the effort. I would start with your highest antenna
>> for top band, next highes for 80m. Note that your yagis will act nicely as
>> capacitive hats to add to effective tower hight.
>> Gl es 73, ab1vl chuck
>>
>>
>>
>>
>> Sent from my Galaxy Tab® A
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|